No, no, you're not thinking; you're just being logical.

You are not thinking. You are merely being logical.

No, no, you're not thinking; you're just being logical.

Every great and deep difficulty bears in itself its own solution. It forces us to change our thinking in order to find it.

If quantum mechanics hasn't profoundly shocked you, you haven't understood it yet.

The best weapon of a dictatorship is secrecy, but the best weapon of a democracy should be the weapon of openness.